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CMAKE_FIND_USE_PACKAGE_REGISTRY
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-------------------------------
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.. versionadded:: 3.16
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Controls the default behavior of the :command:`find_package` command for
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whether or not to search paths provided by the :ref:`User Package Registry`.
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By default this variable is not set and the behavior will fall back
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to that determined by the deprecated
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:variable:`CMAKE_FIND_PACKAGE_NO_PACKAGE_REGISTRY` variable. If that is
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also not set, then :command:`find_package` will use the
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:ref:`User Package Registry` unless the ``NO_CMAKE_PACKAGE_REGISTRY`` option
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is provided.
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This variable takes precedence over
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:variable:`CMAKE_FIND_PACKAGE_NO_PACKAGE_REGISTRY` when both are set.
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In some cases, for example to locate only system wide installations, it
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is not desirable to use the :ref:`User Package Registry` when searching
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for packages. If the :variable:`CMAKE_FIND_USE_PACKAGE_REGISTRY`
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variable is ``FALSE``, all the :command:`find_package` commands will skip
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the :ref:`User Package Registry` as if they were called with the
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``NO_CMAKE_PACKAGE_REGISTRY`` argument.
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See also :ref:`Disabling the Package Registry` and the
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:variable:`CMAKE_FIND_USE_CMAKE_PATH`,
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:variable:`CMAKE_FIND_USE_CMAKE_ENVIRONMENT_PATH`,
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:variable:`CMAKE_FIND_USE_CMAKE_SYSTEM_PATH`,
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:variable:`CMAKE_FIND_USE_SYSTEM_ENVIRONMENT_PATH`,
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:variable:`CMAKE_FIND_USE_SYSTEM_PACKAGE_REGISTRY`,
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and :variable:`CMAKE_FIND_USE_PACKAGE_ROOT_PATH` variables.
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